viirya commented on code in PR #10304:
URL: https://github.com/apache/datafusion/pull/10304#discussion_r1592977161
##########
datafusion/physical-plan/src/joins/sort_merge_join.rs:
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@@ -1161,6 +1164,15 @@ impl SMJStream {
let filter_columns = if chunk.buffered_batch_idx.is_some() {
if matches!(self.join_type, JoinType::Right) {
get_filter_column(&self.filter, &buffered_columns,
&streamed_columns)
+ } else if matches!(self.join_type, JoinType::LeftSemi) {
+ let buffered_columns = self.buffered_data.batches
+ [chunk.buffered_batch_idx.unwrap()]
+ .batch
+ .columns()
+ .iter()
+ .map(|column| take(column, &buffered_indices, None))
+ .collect::<Result<Vec<_>, ArrowError>>()?;
Review Comment:
This is a bit duplicate to above one block where preparing
`buffered_columns`, we can create a small function for it.
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